From left, the silver, gold and bronze medals for the Pyeongchang 2018 Winter Olympics sit on display after an unveiling ceremony, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

From left, the silver, gold and bronze medals for the Pyeongchang 2018 Winter Olympics sit on display after an unveiling ceremony, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

From left, the silver and gold medals for the Pyeongchang 2018 Winter Olympics sit on display after an unveiling ceremony, Wednesday, Sept. 20, 2017, in New York. Korean characters line the edges of the medals spelling out "Pyeongchang 2018 Winter Olympic Games." (AP Photo/Julie Jacobson)

South Korean President Moon Jae-in speaks during the unveiling ceremony of the Pyeongchang 2018 Winter Olympics medals, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

An Olympic silver medal hangs on display during an unveiling ceremony for the medals which will be awarded during the upcoming Pyeongchang 2018 Winter Olympics, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

An Olympic gold medal hangs on display during an unveiling ceremony for the medals which will be awarded during the upcoming Pyeongchang 2018 Winter Olympics, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

An Olympic bronze medal hangs on display during an unveiling ceremony for the medals which will be awarded during the upcoming Pyeongchang 2018 Winter Olympics, Wednesday, Sept. 20, 2017, in New York. (AP Photo/Julie Jacobson)

From left, the bronze, gold and silver medals for the Pyeongchang 2018 Winter Olympics are seen after an unveiling ceremony in Seoul, South Korea, Thursday, Sept. 21, 2017. South Korea's Pyeongchang is the host city of the 2018 Olympic and Paralympic Winter Games which will be held from February 2018. (AP Photo/Lee Jin-man)

South Korean athletes pose with the silver, gold and bronze medals, from left, for the Pyeongchang 2018 Winter Olympics during an unveiling ceremony in Seoul, South Korea, Thursday, Sept. 21, 2017. South Korea's Pyeongchang is the host city of the 2018 Olympic and Paralympic Winter Games which will be held from February 2018. (AP Photo/Lee Jin-man)

From left, the silver, gold and bronze medals for the Pyeongchang 2018 Winter Olympics are unveiled during a ceremony in Seoul, South Korea, Thursday, Sept. 21, 2017. South Korea's Pyeongchang is the host city of the 2018 Olympic and Paralympic Winter Games which will be held from February 2018. (AP Photo/Lee Jin-man)

South Korean Culture, Sports and Tourism Minister Do Jong-hwan, center, Pyeongchang Organizing Committee for the 2018 Olympic and Paralympic Winter Games Lee Hee-beom, right, and Gangwon Province Vice Gov. Song Suk-doo stand with the silver, gold and bronze medals for the Pyeongchang 2018 Winter Olympics during an unveiling ceremony in Seoul, South Korea, Thursday, Sept. 21, 2017. South Korea's Pyeongchang is the host city of the winter games which will be held from February 2018. (AP Photo/Lee Jin-man)

Lee Hee-Beom, president of the PyeongChang Organising Committee for the 2018 Olympic Games (POCOG), holds the PyeongChang 2018 Olympic gold medal during its unveiling ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic medals are displayed by young South Korean athletes during their unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic medals are displayed during their unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic medals are displayed during their unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic gold medal is displayed during its unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic medals are displayed during their unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

The PyeongChang 2018 Olympic medals are displayed during their unveiling at a ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

Lee Hee-Beom (L), president of the PyeongChang Organising Committee for the 2018 Olympic Games (POCOG), shows the PyeongChang 2018 Olympic gold medal during its unveiling ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je

Lee Hee-Beom, president of the PyeongChang Organising Committee for the 2018 Olympic Games (POCOG), shows the PyeongChang 2018 Olympic gold medal during its unveiling ceremony in Seoul on September 21, 2017. The Olympic Winter Games PyeongChang 2018 medals were officially unveiled on September 21, with features of the Korean alphabet consonants on their bodies. / AFP PHOTO / JUNG Yeon-Je